If you want to talk about the possibility of injuries derailing a players career and ability to perform that is one thing.RG3 was the QBOF. Baker Mayfield. Carson Wentz. Jameis Winston. Marcus Mariota. All guys who started out strong and became polarizing figures for their teams.
This whole "keep pretending nothing bad can happen" schtick is boring. This is a good start for KM. He needs to, and has the capability to, keep grinding and getting better.
All the QB’s you mention have reasons why the took steps backwards from injuries to personal choices to circumstances beyond their control I.e. coaching changes and philosophies or devestating injuries to their supporting cast.
Of course that could happen to Kyler. In fact if it was up to you Kingsbury would be banished and Kyler would be faced with a new coach and system. Great way for him to grow, huh?
Forward ho, P.o.D.